address a conference的用法和样例：
- A businessman who is frustrated by stage fright every time he must address a conference,for example,devotes special efforts to overcome this handicap and consequently becomes an outstanding speaker.
- I want to address a letter to a friend.
- Last year he was chosen to attend a conference of advanced workers.
- I attended a conference on disarmament last week.
- They are holding a conference at ministerial level.